User`s guide

1 Data Processing

If you import fr_data into the System Identiﬁcation Tool GUI, this data has

the name

DC_Converter in the GUI, and not the variable name fr_data.

MATLAB returns the following object properties and values:

ans =

Name: 'DC_Co nver ter'

Frequency: [10 0x1 double]

ResponseData: [1x1x100 double]

SpectrumData: []

CovarianceData: []

NoiseCovariance: []

Units: 'rad/s '

Ts: 0.0800

InputDelay: 0

EstimationInfo: [1x1 struct]

InputName: {'u 1'}

OutputName: {'y 1'}

InputUnit: {'' }

OutputUnit: {'' }

Notes: []

UserData: []

Subreferencing idfrd Objects

You can reference speciﬁc data values in the idfrd object using the following

syntax:

fr_data(outputchannels,inputchannels)

Reference speciﬁcchannelsbynameorbychannelindex.

Tip Use a colon (:) to specify all channels, and use the empty matrix ([])to

specify no channels.

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